Worm Gears

A reliable source for Industrial Gear information and leading Industrial Gear Companies & Manufacturers.

The spur gear comes into contact with the worm at its threaded middle section. If the spur turns, it causes the worm to rotate. If the worm rotates, it causes the spur to turn. Read More…

Worm Gears Worm gears are the combination of a simple spur gear and a worm. A worm is a threaded metal rod that looks like a screw. Worms distinguish themselves from screws in that they are only machined in the middle; the threads do not begin or end at either end of the rod.

Leading Manufacturers

Joliet, IL  |  800-876-7216

Omni G & M Corporation is a leading gear fabricator specializing in precision machined and custom solutions in a variety of sizes and types. Please check out Omni G & M’s website or call a friendly personnel member today! Omni G & M’s commitment to customers is job #1 and customers across the United States depend on Omni’s experienced professionals for quality and reliability.

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Omni Gear & Machine Corporation $$$

East Walpole, MA  |  800-491-1073

Gears are what we do best, and we are experts in our field. We have three generations of experience backing our company, and we use all of it to benefit you in any way possible. We know exactly how to make gears efficiently and with durability. No matter what kind of gear you need, we can get it for you. Contact us today for additional details!

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Commercial Gear & Sprocket Company, Inc. $$$

Syracuse, NY  |  315-488-0100

Gear Motions is a leading gear manufacturer specializing in supplying custom cut and ground gears. Whether we’re manufacturing your gear complete or working from your blanks, our wide range of precision gear manufacturing capabilities and services deliver quality gears to meet almost any application. The Gear Motions network is capable of manufacturing all types of products including precision ground helical, spur, bevel and worm gears, sprockets, timing pulleys, shafts, splines and more.

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Gear Motions, Inc. $$$

Houston, TX  |  713-862-6200

Precision Pump and Gear Works specializes in gear repairs by either rebuilding the broken or chipped teeth, re-cutting them, or by rehobbing them. Part of our repair process is determining what happened so we can report it back to our customers; any misalignments, excessive temperatures, or overloading in the machine will be reported. We offer gearbox repair 24 hours a day, 7 days a week. Precision Pump will pick up and deliver gearboxes for free, all across the US. For more information about PPG call us today!

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Precision Pump & Gear Works $$$

South Bend, IN  |  574-234-4116

Schafer Gear Works is a leading producer of high-precision, custom-engineered industrial gears & machined parts. Look to us for the production of your spur, helical or internal gears. Since 1934, our values of hard work & commitment to customer satisfaction have been well ingrained into the culture of our company. Bring us your most demanding specifications and we’ll provide effective solutions.

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Schafer Gear Works, Inc. $$$

Hayward, CA  |  510-782-9226

Perry Tool & Research produces powder metal gears to AGMA standards of 8, 9, 10, 11 and 12 and processes to a Cpk 1.33 minimum. Bushings, bearings, grooved pulleys and an array of other mechanical parts are manufactured to the same high standards. We have 42 years of excellence producing powder metal parts.

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Perry Tool & Research, Inc. $$$
placeholder image Omni Gear & Machine Corporation Commercial Gear & Sprocket Company, Inc. Gear Motions, Inc. Precision Pump & Gear Works Schafer Gear Works, Inc. Perry Tool & Research, Inc.

Worm gears are used to transfer torque, just like all other industrial gears, but they are capable of transferring motion at odd angles or under unusual circumstances. The tuning pins of a string bass, for example, are connected to worms, which themselves are connected to gears. Those gears are connected to rods, which are themselves each connected to a string.

Custom Manufactured Worm Gears Worm Gears - Omni Gear & Machine Corporation

The worm gear is capable of resisting the tension of the string, keeping the instrument in tune. Worm gears are usually constructed of bronze, iron, or steel, but are available in a wide range of material options. Worm gears are not a recent advancement in torque transmission technology; original worm gear configurations were made of wood and were often attached to hand cranks.

Worm gears can transfer motion between axes. A gear's axis, in the case of a circular gear viewed at its face, extends from the middle of the circle out into the z axis. In the case of a worm, the axis goes through each end. The axes of worms and circular gears intersect each other when they are paired together. The transfer of torque between two axes is one of the defining features of a worm drive. Another defining feature is the control over that transfer that the configuration allows its users.

Worm drives can be used to either speed up or slow down the transfer of torque. They can also multiply or resolve torque or enhance the accuracy in positioning systems. Worm and spur teeth quantities, pitch diameters, face widths and lengths are all contributing factors to the performance of a worm gear. Power transmission requirements, noise and heat generation all depend on those configurations. For less demanding applications, some worm gears can be made of synthetic materials like nylon and other plastics.

Worm Gears Informational Video